Use tmt+osci for gating

Add smoke test based on the quick start from documentation

.fmf/version

@@ -0,0 +1 @@
+1

gating.yaml

@@ -3,4 +3,5 @@ product_versions:
   - rhel-8
 decision_context: osci_compose_gate
 rules:
-  - !PassingTestCaseRule {test_case_name: baseos-ci.brew-build.tier1.functional}
+  - !PassingTestCaseRule {test_case_name: osci.brew-build.tier0.functional}
+

tests/plan.fmf

@@ -0,0 +1,12 @@
+environment:
+  PYTHON: /usr/libexec/platform-python
+
+discover:
+  how: fmf
+
+execute:
+  how: tmt
+
+prepare:
+  how: feature
+  crb: enabled

tests/quick_start.fmf

@@ -0,0 +1,10 @@
+test: |
+  trap cleanup EXIT
+  cleanup(){
+    test -d indexdir && rm -rf indexdir
+  }
+  mkdir indexdir
+  ${PYTHON:-python3} quick_start.py
+
+require:
+- python3-whoosh

tests/quick_start.py

@@ -0,0 +1,20 @@
+# Based on
+# https://whoosh.readthedocs.io/en/latest/quickstart.html#a-quick-introduction
+
+from whoosh.index import create_in
+from whoosh.fields import *
+schema = Schema(title=TEXT(stored=True), path=ID(stored=True), content=TEXT)
+ix = create_in("indexdir", schema)
+writer = ix.writer()
+writer.add_document(title=u"First document", path=u"/a",
+                    content=u"This is the first document we've added!")
+writer.add_document(title=u"Second document", path=u"/b",
+                    content=u"The second one is even more interesting!")
+writer.commit()
+from whoosh.qparser import QueryParser
+with ix.searcher() as searcher:
+    query = QueryParser("content", ix.schema).parse("first")
+    results = searcher.search(query)
+    result = results[0]
+
+    assert result.get('title')  == 'First document'